Transcript for Giuliana Rancic's Controversial Secrets to a Happy Marriage

Coming up, we have adele, jennifer aniston. Reporter: She's the white-hot entertainment reporter on e! He's a savvy businessman, the first-ever winner of "the apprentice." Together, they are gulianna and bill. And their decision to conceive and use of a surrogate is the subject of a reality show. This morning, gulianna is at the middle of a mommy war. She said the secret to happiness in their marriage, I to put bill first and their child second. I always say to bill, you are my first baby. He was my first love and my first baby. And duke is my second baby. For these mom bloggers, one thing always comes first. Babies take precedent over everything. If you ask me, actually, what the breakdown was, I would say it goes, my children, my girlfriends, then my husband. Shh. Don't tell him that. He doesn't know that. Reporter: Not so for radio host and relationship expert mel robbins. If you want a one-way ticket to divorce, put your kids ahead of your spouse. If you end up focusing 100% of your attention on the kids first, you and your spouse will start to resent each other. Oh, god. No. Reporter: Gulianna and bill say they split the parenting duties and still have loots of date nights. White month-old duke may not be king of the house. Mom and dad say, we're stronger than we ever were before and imagined we could be. For "good morning america," cecilia vega, abc news, los angeles.

This transcript has been automatically generated and may not be 100% accurate.

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